Setting-gear for calculating-machines.



W. AUGUSTIN.

SETTING GEAR FOB GALGULATING MACHINES.

APPLICATION FILED APR. 2, 1913.

1,1 I Patented July 28, 1914.

a BHEETS-SHEET 1.

W. AUGUSTIN- SBTTING GEAR FOR GALGULATING MACHINES.

APPLICATION FILBDVAPR. 2, 1913.

1,104,763. Patented July 28, 19m

3 SHEETS-SHEET 2.

W. AUGUSTIN.

SETTING GEAR FOB. UALGULATING MACHINES.

APPLICATION rum) APR. 2, 1913.

1,104,763. Patented July 28, 1914.

3 SHBETS-SHEET 3.

1" I will Fig.9.

, by Aflnrneys= W W WILHELM AUGUSTIN, OF GHARLOTTENBURG, GERMANY.

SETTING-GEAR FOR CALCULATING-MACHINES.

Specification of Letters Patent.

Patented July as, 1914..

Application filed April 2. 1913. Serial No. 758,319.

To all whom it may concern Be it known that I, "WILHnLM Aneusrrn, a citizen of the German Empire, residing at Charlottenburg, in the Empire of Germany, have invented new and useful Improvements in and Connected with the Setting- Gear of Calculating -Machmes, of which the following is a specification.

Calculating machines, of the class here1nafter described as at present generally constructed, have the disadvantage that the cover of the machine must be provided with long slits for the setting levers and, by means of these slits, grit, dust, dirt, water or the like can reach the internal mechanism of the machine, therebv rendering the proper movement of the various parts very difficult, if not impossible.

The present invention has mainly for its object to obviate such disadvantageby constructing a machine, in which the objectionable slits in the top portion of the cover are dispensed with and this is rendered possible owing to the fact that, in place of the customary setting levers, setting slides or rack rods are used, which pass horizontally under the guide passage, into the machine and work directlyupon the setting wheels not from above, but from below. a

By this arrangement a further very important advantage is obtained as the stability of the machine is considerably increased owing to the setting mechanism being low down in the machine. This advantage cannot be underrated, as, with set ting mechanism difiicult to operate, there is danger of the machine being upset.

According to the present invention the point of application of the setting force lies so near the base of the machine that the machine cannot be readily overbalanced as the low-down center of gravity of the heavy mass of the setting mechanism serves to counteract any tipping movement.

Furthermore, it has hitherto been usual to bring the setting levers back to the zero position by means of snecial crank gear, but, under this invention, the operation is effected by a simple recall lever, the whole crank mechanism and its transmission wheels being dispensed with.

I will now proceed to describe my invention with reference to the -accompany-.

ing drawings, in which- Figure 1 1s a vertical section of a calcu- Fig. 6 is a vertical secfront elevation of the crank lock. Fig. 8'.

is a detail view of same to a larger scale. Fig. 9 is a plan of a calculating machine embodying my invention. Fig. 10 is a front elevation of same.

Sim1lar letters of reference refer to similar parts in the views.

The characteristic feature of the new setting or starting gear is that the setting levers of the calculating machine work on the usual setting wheels S, not from behind'or from above but from below. Through the mechanism of the rack rod B, the settin levers A can act on thethree pins 0 fitte on the adjusting ring of the setting wheel, and out into operation the desired number of-rungs or steps. On the rack rod B there is an extension Bflwith a scale of figures'on it, so that the number introduced into the reckoning is shown automatically when the setting gear-41. 6., the setting levers A--are put into operation. The extension B of the rack rod B can further be used for setting the desired figure or number independently of the setting levers A. If the apparatus is made in this way, the setting levers A can be omitted entirely and a knob or handle provided on the extension B Of course, it is to be understood that While three pins 0 are mentioned the applicant does not restrict himself to such number and the setting can be effected by means of any desired munber of pins whatsoever.

To prevent the rack rods B interferin with the turning of the setting wheels during the operation of calculation, a throwout device is provided. This throw-out device preferably consists of a lever E with its extension E and a locking lever F. The throw-out device is put in operation by pressing the locking lever F to the side thereby causing the lever E to rise under the action of the spring B fixed to the frame of the machine. In rising, the lever E turns about the point B and depresses the rod B, thereby depressing the underlying fork-shaped and enclasping rack rods of the setting gear. As those rack rods are depressed. one or other of the slots B therein enters the locking bar B fastened on the frame, so that the rack rods be held fast, in order that, when the setting wheels have returned to the position of rest, the pins C may rciinter the corresponding notches in the rack rods ll when the adjusting or setting gear is thrown into working position present machine the operation is efiectedin a simple fashion by a laterally fitted recall lever Z so that the whole crank mechanism and its transmission wheels are dispensed with. According to this arrangement the recall lever Z (see Figs. 3 and 4) which is fitted at the side of the machine, is pivoted at Z 'One of its arms is provided with a bar or rail Z placed in such a way that it can come into contact with the rack rods B of the setting gear, with which the setting levers are connected. To bring the apparatus back into zero position, the lever Z is turned about its pivot Z by means of a suitable handle, andthe rack rods B are thus displaced by the rail Z a spring or the like returning the lever Z back to its original position.

To prevent the throw-out gear coming into operation when the crank is turned by means of the handle T, (see Fig. 7) or to prevent the setting mechanismfrom moving upward, a small block P (see Figs. 5 and 6) is provided on the side of the lever E of the throw-out gear. This block, which can press against the lever V, causes said lever to turn about the point V when'pressure is exerted on the lever of the throw-out gear. It is, however, impossible for the lever V to turn unless the catch or nose V thereof can enter a corresponding opening .V in one of the setting wheels S of the machine. The osition of the opening V is such that the catch or nose V can enter it only when the crank ;thrown out of gear, the handle T of the crank is made in such a way that it cannot be moved out of its position of rest unless the setting mechanism is actually thrown out. For this purpose the lever of the thrownmavos out gear is provided with a small block P (see Fig. 7) which can press against a rod.

1. The rod P is so arranged. that it can move up against a pin P (see Fig. 8) which can enter a notch in the handle T of the crank. it the setting device is not thrown out of gear, the pin P held in the aforesaid notch oi the crank handle by the pres .thereby peirnitting spring B to lower rod B and thus withdraw the notched rods B from engagement with pins 0. Owing to the tilting movement of lever E, pin P is withdrawn. from the notch. of handle T so that the latter may now be manipulated to perform the calculation desired. After this calculation has been completed, lever E is depressed. to effect a rengagment between rods B and pins C, while lever E is retained in its depressed position by catch F. The operation described may now be repeated.

I claim:

1. In calculating machine, a rotatable setting wheel, a manually operable slide arranged therebelow, means intermediate said slide and wheel for transmitting motion from the slide to the wheel, and manually operable means for rendering said transmitting means inoperative.

2. In a calculating machine, a rotatable setting wheel, pins carried thereby, a springinfluenced toothed slide arranged below said wheel and adapted to engage said pins, and means for depressing the slide whereby the latter is thrown out of engagement with the pins.

3'. In a calculating machine, a rotatable setting wheel, pins carried thereby, a springinfiuenced toothed'slide arranged below said wheel and adapted to engage said pins, a horizontally oscillatable lever, and means controlled by saidlever for depressing the slide whereby the latter is thrown out of engagement with the pins.

4-. In a calculating machine, a rotatable setting Wheel, pins carried thereby, a springinfluenced toothed slide arranged below said wheel and adapted to engage said pins, a horizontally oscillata'ble lever, means controlled by said lever for depressing the slide whereby the latter is thrown out of engage- 'ment with the pins, and means for holding the. depressed slide against longitudinal displacement.

wheel andada'pted to engage s'aidpins, a

horizontally oseillatable lever, ineans controlled by said lever for depressing the slide whereby the latter is thrown out of engage ment with the pins, and means for returning the slide to its zero position.

-6. In a calculating machine, a. rotatable setting Wheel, pins carried thereby, a spring; mfluenoed toothed slide arranged below said Wheel and adapted to engage said pins, a [horizontally oscillatable lever, means controlled by said lever for depressing the'slide whereby the latter is thrown out of engagement wlth the pins, a crank adapted to rotate the setting wheel, and locking means for said crank.

7. In a calculating machine, a rotatable setting wheel, pins carried thereby, a springinfluenced toothed slide arranged below said wheel and adapted to engage said pins, a horizontally oscillatable lever, means controlled by said lever for depressing the slide whereby the latter is thrown out of engagement with the pins, a crank adapted to retate the setting wheel, locking means for said crank, and means for releasing the looking' means upon the depression of the slide.

' VVILHELM AUGUSTIN.

Witnesses:

HENRY HAsPnn, VVOLDEMAR HAUPT. 

